Frank w



(No Model.)

I. W. SHAVER.

VALVE.

No. 397,757. Patented Feb. 12, 1889,

w /%zz@4 UN tree tirares PATENT @rrrcs,

FRANK \Y. SEAVER, Ol HARTFORD, CONNECTICUT, ASSIGNOR TO THE PRATT Ev CADY COMPANY, OF SAME PLACE.

VALVE.

SPECIFICATION forming part of Letters Patent No. 397,757, dated February 12, 1889.

Application filed August 23, 1888. Serial No. 283,591- (No model.)

To all whom it may concern formed of thin metal of a size and shape to Be it known that I, FRANK \V. SEAVER, of set into the opening in the body of the valve, Hartford, Hartford county,Connecticut, a the bottom edges of the sides 6 of which are citizen of the United States, have invented cut out on a curve to set down upon and,

certain new and useful Improvements in when the bonnet of the valve is in place, hold Valves, of which the following is a full, clear, the seats firmly in place, with their lower and exact specification. edges in the grooves in the rims 3 and their My invention relates to the class of straightfaces against the seat-faces on the body in way gate-valves, and the object of the invensuch manner that they are always in position 10 tion is to provide a renewable seat-valve of for the wedge-shaped gateto seatitself against this class within which the valve-seat may be them and make atight joint. The edges of easily and quicklyrenewed if the valve leaks, the frame which hold the upper edges of the and which will be simple and cheap in conseats are cut 011 a bevel to prevent the rings struction; and the invention consists in a from being drawn inward when the gate is 15 valve the opening in which is provided with raised, and, if it is desired, the sides which inclined seat-faces around the port-openings, are joined together by the tie'pieces 7 can be and having anoutwardly-proj ecting rim partly made slightly elastic and formed so as to encircling the underneath part of the valvespring outward. This will firmly hold the seats, said rim being grooved so as to hold the seats in place against the seat-faces on the 20 lower edge of the valve-seats from beingblown body and prevent dirt from getting between inward; and it further consists of such a the seats and faces, which would cause the valve with a seat-holder or frame-work which valve to leak. is adapted to rest upon the upper edges of \Vhen a seat becomes worn in my improved said seats and hold them down in the grooved valve, the bonnet is removed and the seat- 2 5 rim, as more particularly hereinafter deholder lifted out and a new seat substituted scribed, and pointed out in the claims. for the worn one, and as the rings are of small Referring to the accompanying drawings, dimensions and cheap in construction a sup- Figure 1 is a side view of a valve, with part ply can always be kept on hand. A further broken away, in central vertical longitudinal advantage resides in the fact that no special 0 section. Fig. 9 is a view in vert-ical trans- 1 fitting is required when the ring is inserted 8o verse section of the body and seat -holder. in place, for the reason that the edges of the Fig. 3 is a plan view of the seat-holder. rings will fit into the groove in the rim, and

In the drawings, 1 denotes the body of the the seat-holder will set down upon the rings valve,which is of common form and construcand hold them in place if there should be a tion, with the inclined seat-faces 2. A rim, slight irregularity in the formation of the 3, is cast on theinside of the body of the valve, edges or if they should not be exactly round, around the lower part of the port-openings, as the edges do not make the joint that is to and is undercut or grooved, usually when the prevent leakage, while any difference in the seat-faces are milled, to support and hold the angle between the sides of the gate and the 40 valve-seats t to the seat-faces The valveseat-faces is compensated by the elasticity of seats are rings, preferably formed of asbestus the seats. or the like mineral substance compounded I claim as my invention- I with a gum, as rubber, or they may be made 1. In the herein-described valve, in combiof soft metal. The openings through these nation with the body having plane inclined 45 seats are the size of the port-openings, and seat-faces adjacent to each port, grooves cut their outer edges are formed to loosely lit and in the body underneath the seat-faces concenset into the groove cut in the rim 3, so that trio with the port-openings, seats supported the seats will lie against theinclined seat-faces by said grooves, a framework loosely placed 2 011 the body of the valve. in the opening in the body with a portion of 50 5 denotes the seat-holder, which is a frame its lower edge resting upon the upper edges too of the seats and holding them against the angular frame-work with two of its sides rest body, and the bonnet restingupon the fi-aineing upon the upper edges of the seats and work and holding it down upon the top of the holding them against the body, and the bon seals, substantially as described. I net resting upon the frame-work and. holding 5 2. In the herein-described valve, in. eoinbif the 'l'Trmne-Wm'k down upon thelinmlthe sends, r 5

'naiion with tllebodyhavingflatinolined sonisnhsi'uniiullv as described; faces adjacent to each 'ninrt and grooved rims l l l\ .l\Nl\' SEA YER. cast integral with the body nndernoalll i'llo \Vilnessos: sentimes eonooimrie with the p0rt -openings, HARRY H. \Vnq'lilllvns,

1o souls supporiml by said grooved rims, :1 reoi- ALIJE S. \\"I'IALI.'\M:L 

